CPW ULTRA - WIDEBAND BANDPASS FILTER USING DEFECTED GROUND

In this work, we are trying to develop a new filter that have good in - band and out - band and wideband property. The main part of this filter is a parallel - coupled microstrip - coplanar waveguide (CPW),an rectangular ring is made up on the ground of the substrate, and an parallel coupled CPW is placed on the top of the substrate, it is utilized for enhancing the in - band performance and decreasing the reflection coefficient. This configuration provides a very simple a nd compact filter configuration .